diff options
Diffstat (limited to 'cache.h')
| -rw-r--r-- | cache.h | 246 |
1 files changed, 174 insertions, 72 deletions
@@ -6,6 +6,7 @@ #include "hash.h" #include "advice.h" #include "gettext.h" +#include "convert.h" #include SHA1_HEADER #ifndef git_SHA_CTX @@ -16,13 +17,28 @@ #endif #include <zlib.h> -#if defined(NO_DEFLATE_BOUND) || ZLIB_VERNUM < 0x1200 -#define deflateBound(c,s) ((s) + (((s) + 7) >> 3) + (((s) + 63) >> 6) + 11) -#endif - -void git_inflate_init(z_streamp strm); -void git_inflate_end(z_streamp strm); -int git_inflate(z_streamp strm, int flush); +typedef struct git_zstream { + z_stream z; + unsigned long avail_in; + unsigned long avail_out; + unsigned long total_in; + unsigned long total_out; + unsigned char *next_in; + unsigned char *next_out; +} git_zstream; + +void git_inflate_init(git_zstream *); +void git_inflate_init_gzip_only(git_zstream *); +void git_inflate_end(git_zstream *); +int git_inflate(git_zstream *, int flush); + +void git_deflate_init(git_zstream *, int level); +void git_deflate_init_gzip(git_zstream *, int level); +void git_deflate_end(git_zstream *); +int git_deflate_abort(git_zstream *); +int git_deflate_end_gently(git_zstream *); +int git_deflate(git_zstream *, int flush); +unsigned long git_deflate_bound(git_zstream *, unsigned long); #if defined(DT_UNKNOWN) && !defined(NO_D_TYPE_IN_DIRENT) #define DTYPE(de) ((de)->d_type) @@ -153,6 +169,7 @@ struct cache_entry { unsigned int ce_flags; unsigned char sha1[20]; struct cache_entry *next; + struct cache_entry *dir_next; char name[FLEX_ARRAY]; /* more */ }; @@ -290,7 +307,7 @@ static inline unsigned int canon_mode(unsigned int mode) } #define flexible_size(STRUCT,len) ((offsetof(struct STRUCT,name) + (len) + 8) & ~7) -#define cache_entry_size(len) flexible_size(cache_entry,len) +#define cache_entry_size(len) (offsetof(struct cache_entry,name) + (len) + 1) #define ondisk_cache_entry_size(len) flexible_size(ondisk_cache_entry,len) #define ondisk_cache_entry_extended_size(len) flexible_size(ondisk_cache_entry_extended,len) @@ -300,7 +317,6 @@ struct index_state { struct string_list *resolve_undo; struct cache_tree *cache_tree; struct cache_time timestamp; - void *alloc; unsigned name_hash_initialized : 1, initialized : 1; struct hash_table name_hash; @@ -379,6 +395,7 @@ static inline enum object_type object_type(unsigned int mode) } #define GIT_DIR_ENVIRONMENT "GIT_DIR" +#define GIT_NAMESPACE_ENVIRONMENT "GIT_NAMESPACE" #define GIT_WORK_TREE_ENVIRONMENT "GIT_WORK_TREE" #define DEFAULT_GIT_DIR_ENVIRONMENT ".git" #define DB_ENVIRONMENT "GIT_OBJECT_DIRECTORY" @@ -419,8 +436,11 @@ extern char *get_object_directory(void); extern char *get_index_file(void); extern char *get_graft_file(void); extern int set_git_dir(const char *path); +extern const char *get_git_namespace(void); +extern const char *strip_namespace(const char *namespaced_ref); extern const char *get_git_work_tree(void); -extern const char *read_gitfile_gently(const char *path); +extern const char *read_gitfile(const char *path); +extern const char *resolve_gitdir(const char *suspect); extern void set_git_work_tree(const char *tree); #define ALTERNATE_DB_ENVIRONMENT "GIT_ALTERNATE_OBJECT_DIRECTORIES" @@ -511,15 +531,18 @@ struct pathspec { struct pathspec_item { const char *match; int len; - unsigned int has_wildcard:1; + unsigned int use_wildcard:1; } *items; }; extern int init_pathspec(struct pathspec *, const char **); extern void free_pathspec(struct pathspec *); extern int ce_path_match(const struct cache_entry *ce, const struct pathspec *pathspec); -extern int index_fd(unsigned char *sha1, int fd, struct stat *st, int write_object, enum object_type type, const char *path, int format_check); -extern int index_path(unsigned char *sha1, const char *path, struct stat *st, int write_object); + +#define HASH_WRITE_OBJECT 1 +#define HASH_FORMAT_CHECK 2 +extern int index_fd(unsigned char *sha1, int fd, struct stat *st, enum object_type type, const char *path, unsigned flags); +extern int index_path(unsigned char *sha1, const char *path, struct stat *st, unsigned flags); extern void fill_stat_cache_info(struct cache_entry *ce, struct stat *st); #define REFRESH_REALLY 0x0001 /* ignore_valid */ @@ -567,46 +590,20 @@ extern int warn_ambiguous_refs; extern int shared_repository; extern const char *apply_default_whitespace; extern const char *apply_default_ignorewhitespace; +extern const char *git_attributes_file; extern int zlib_compression_level; extern int core_compression_level; extern int core_compression_seen; extern size_t packed_git_window_size; extern size_t packed_git_limit; extern size_t delta_base_cache_limit; +extern unsigned long big_file_threshold; +extern unsigned long pack_size_limit_cfg; extern int read_replace_refs; extern int fsync_object_files; extern int core_preload_index; extern int core_apply_sparse_checkout; -enum safe_crlf { - SAFE_CRLF_FALSE = 0, - SAFE_CRLF_FAIL = 1, - SAFE_CRLF_WARN = 2 -}; - -extern enum safe_crlf safe_crlf; - -enum auto_crlf { - AUTO_CRLF_FALSE = 0, - AUTO_CRLF_TRUE = 1, - AUTO_CRLF_INPUT = -1 -}; - -extern enum auto_crlf auto_crlf; - -enum eol { - EOL_UNSET, - EOL_CRLF, - EOL_LF, -#ifdef NATIVE_CRLF - EOL_NATIVE = EOL_CRLF -#else - EOL_NATIVE = EOL_LF -#endif -}; - -extern enum eol eol; - enum branch_track { BRANCH_TRACK_UNSPECIFIED = -1, BRANCH_TRACK_NEVER = 0, @@ -675,14 +672,24 @@ extern char *sha1_pack_name(const unsigned char *sha1); extern char *sha1_pack_index_name(const unsigned char *sha1); extern const char *find_unique_abbrev(const unsigned char *sha1, int); extern const unsigned char null_sha1[20]; -static inline int is_null_sha1(const unsigned char *sha1) + +static inline int hashcmp(const unsigned char *sha1, const unsigned char *sha2) { - return !memcmp(sha1, null_sha1, 20); + int i; + + for (i = 0; i < 20; i++, sha1++, sha2++) { + if (*sha1 != *sha2) + return *sha1 - *sha2; + } + + return 0; } -static inline int hashcmp(const unsigned char *sha1, const unsigned char *sha2) + +static inline int is_null_sha1(const unsigned char *sha1) { - return memcmp(sha1, sha2, 20); + return !hashcmp(sha1, null_sha1); } + static inline void hashcpy(unsigned char *sha_dst, const unsigned char *sha_src) { memcpy(sha_dst, sha_src, 20); @@ -730,10 +737,10 @@ int safe_create_leading_directories(char *path); int safe_create_leading_directories_const(const char *path); int mkdir_in_gitdir(const char *path); extern char *expand_user_path(const char *path); -char *enter_repo(char *path, int strict); +const char *enter_repo(const char *path, int strict); static inline int is_absolute_path(const char *path) { - return path[0] == '/' || has_dos_drive_prefix(path); + return is_dir_sep(path[0]) || has_dos_drive_prefix(path); } int is_directory(const char *); const char *real_path(const char *path); @@ -745,21 +752,37 @@ char *strip_path_suffix(const char *path, const char *suffix); int daemon_avoid_alias(const char *path); int offset_1st_component(const char *path); -/* Read and unpack a sha1 file into memory, write memory to a sha1 file */ -extern int sha1_object_info(const unsigned char *, unsigned long *); -extern void *read_sha1_file_repl(const unsigned char *sha1, enum object_type *type, unsigned long *size, const unsigned char **replacement); +/* object replacement */ +#define READ_SHA1_FILE_REPLACE 1 +extern void *read_sha1_file_extended(const unsigned char *sha1, enum object_type *type, unsigned long *size, unsigned flag); static inline void *read_sha1_file(const unsigned char *sha1, enum object_type *type, unsigned long *size) { - return read_sha1_file_repl(sha1, type, size, NULL); + return read_sha1_file_extended(sha1, type, size, READ_SHA1_FILE_REPLACE); +} +extern const unsigned char *do_lookup_replace_object(const unsigned char *sha1); +static inline const unsigned char *lookup_replace_object(const unsigned char *sha1) +{ + if (!read_replace_refs) + return sha1; + return do_lookup_replace_object(sha1); } + +/* Read and unpack a sha1 file into memory, write memory to a sha1 file */ +extern int sha1_object_info(const unsigned char *, unsigned long *); extern int hash_sha1_file(const void *buf, unsigned long len, const char *type, unsigned char *sha1); extern int write_sha1_file(const void *buf, unsigned long len, const char *type, unsigned char *return_sha1); extern int pretend_sha1_file(void *, unsigned long, enum object_type, unsigned char *); extern int force_object_loose(const unsigned char *sha1, time_t mtime); +extern void *map_sha1_file(const unsigned char *sha1, unsigned long *size); +extern int unpack_sha1_header(git_zstream *stream, unsigned char *map, unsigned long mapsize, void *buffer, unsigned long bufsiz); +extern int parse_sha1_header(const char *hdr, unsigned long *sizep); /* global flag to enable extra checks when accessing packed objects */ extern int do_check_packed_object_crc; +/* for development: log offset of pack access */ +extern const char *log_pack_access; + extern int check_sha1_signature(const unsigned char *sha1, void *buf, unsigned long size, const char *type); extern int move_temp_to_file(const char *tmpfile, const char *filename); @@ -789,20 +812,64 @@ struct object_context { }; extern int get_sha1(const char *str, unsigned char *sha1); -extern int get_sha1_with_mode_1(const char *str, unsigned char *sha1, unsigned *mode, int gently, const char *prefix); +extern int get_sha1_with_mode_1(const char *str, unsigned char *sha1, unsigned *mode, int only_to_die, const char *prefix); static inline int get_sha1_with_mode(const char *str, unsigned char *sha1, unsigned *mode) { - return get_sha1_with_mode_1(str, sha1, mode, 1, NULL); + return get_sha1_with_mode_1(str, sha1, mode, 0, NULL); } -extern int get_sha1_with_context_1(const char *name, unsigned char *sha1, struct object_context *orc, int gently, const char *prefix); +extern int get_sha1_with_context_1(const char *name, unsigned char *sha1, struct object_context *orc, int only_to_die, const char *prefix); static inline int get_sha1_with_context(const char *str, unsigned char *sha1, struct object_context *orc) { - return get_sha1_with_context_1(str, sha1, orc, 1, NULL); + return get_sha1_with_context_1(str, sha1, orc, 0, NULL); } + +/* + * Try to read a SHA1 in hexadecimal format from the 40 characters + * starting at hex. Write the 20-byte result to sha1 in binary form. + * Return 0 on success. Reading stops if a NUL is encountered in the + * input, so it is safe to pass this function an arbitrary + * null-terminated string. + */ extern int get_sha1_hex(const char *hex, unsigned char *sha1); + extern char *sha1_to_hex(const unsigned char *sha1); /* static buffer result! */ +extern int read_ref_full(const char *filename, unsigned char *sha1, + int reading, int *flags); extern int read_ref(const char *filename, unsigned char *sha1); -extern const char *resolve_ref(const char *path, unsigned char *sha1, int, int *); + +/* + * Resolve a reference, recursively following symbolic refererences. + * + * Store the referred-to object's name in sha1 and return the name of + * the non-symbolic reference that ultimately pointed at it. The + * return value, if not NULL, is a pointer into either a static buffer + * or the input ref. + * + * If the reference cannot be resolved to an object, the behavior + * depends on the "reading" argument: + * + * - If reading is set, return NULL. + * + * - If reading is not set, clear sha1 and return the name of the last + * reference name in the chain, which will either be a non-symbolic + * reference or an undefined reference. If this is a prelude to + * "writing" to the ref, the return value is the name of the ref + * that will actually be created or changed. + * + * If flag is non-NULL, set the value that it points to the + * combination of REF_ISPACKED (if the reference was found among the + * packed references) and REF_ISSYMREF (if the initial reference was a + * symbolic reference). + * + * If ref is not a properly-formatted, normalized reference, return + * NULL. If more than MAXDEPTH recursive symbolic lookups are needed, + * give up and return NULL. + * + * errno is sometimes set on errors, but not always. + */ +extern const char *resolve_ref_unsafe(const char *ref, unsigned char *sha1, int reading, int *flag); +extern char *resolve_refdup(const char *ref, unsigned char *sha1, int reading, int *flag); + extern int dwim_ref(const char *str, int len, unsigned char *sha1, char **ref); extern int dwim_log(const char *str, int len, unsigned char *sha1, char **ref); extern int interpret_branch_name(const char *str, struct strbuf *); @@ -810,7 +877,7 @@ extern int get_sha1_mb(const char *str, unsigned char *sha1); extern int refname_match(const char *abbrev_name, const char *full_name, const char **rules); extern const char *ref_rev_parse_rules[]; -extern const char *ref_fetch_rules[]; +#define ref_fetch_rules ref_rev_parse_rules extern int create_symref(const char *ref, const char *refs_heads_master, const char *logmsg); extern int validate_headref(const char *ref); @@ -964,12 +1031,12 @@ extern struct ref *find_ref_by_name(const struct ref *list, const char *name); extern char *git_getpass(const char *prompt); extern struct child_process *git_connect(int fd[2], const char *url, const char *prog, int flags); extern int finish_connect(struct child_process *conn); -extern int path_match(const char *path, int nr, char **match); +extern int git_connection_is_socket(struct child_process *conn); struct extra_have_objects { int nr, alloc; unsigned char (*array)[20]; }; -extern struct ref **get_remote_heads(int in, struct ref **list, int nr_match, char **match, unsigned int flags, struct extra_have_objects *); +extern struct ref **get_remote_heads(int in, struct ref **list, unsigned int flags, struct extra_have_objects *); extern int server_supports(const char *feature); extern struct packed_git *parse_pack_index(unsigned char *sha1, const char *idx_path); @@ -984,7 +1051,7 @@ extern struct packed_git *find_sha1_pack(const unsigned char *sha1, extern void pack_report(void); extern int open_pack_index(struct packed_git *); extern void close_pack_index(struct packed_git *); -extern unsigned char *use_pack(struct packed_git *, struct pack_window **, off_t, unsigned int *); +extern unsigned char *use_pack(struct packed_git *, struct pack_window **, off_t, unsigned long *); extern void close_pack_windows(struct packed_git *); extern void unuse_pack(struct pack_window **); extern void free_pack_by_name(const char *); @@ -993,20 +1060,58 @@ extern struct packed_git *add_packed_git(const char *, int, int); extern const unsigned char *nth_packed_object_sha1(struct packed_git *, uint32_t); extern off_t nth_packed_object_offset(const struct packed_git *, uint32_t); extern off_t find_pack_entry_one(const unsigned char *, struct packed_git *); +extern int is_pack_valid(struct packed_git *); extern void *unpack_entry(struct packed_git *, off_t, enum object_type *, unsigned long *); extern unsigned long unpack_object_header_buffer(const unsigned char *buf, unsigned long len, enum object_type *type, unsigned long *sizep); extern unsigned long get_size_from_delta(struct packed_git *, struct pack_window **, off_t); -extern const char *packed_object_info_detail(struct packed_git *, off_t, unsigned long *, unsigned long *, unsigned int *, unsigned char *); +extern int unpack_object_header(struct packed_git *, struct pack_window **, off_t *, unsigned long *); + +struct object_info { + /* Request */ + unsigned long *sizep; + + /* Response */ + enum { + OI_CACHED, + OI_LOOSE, + OI_PACKED, + OI_DBCACHED + } whence; + union { + /* + * struct { + * ... Nothing to expose in this case + * } cached; + * struct { + * ... Nothing to expose in this case + * } loose; + */ + struct { + struct packed_git *pack; + off_t offset; + unsigned int is_delta; + } packed; + } u; +}; +extern int sha1_object_info_extended(const unsigned char *, struct object_info *); /* Dumb servers support */ extern int update_server_info(int); +/* git_config_parse_key() returns these negated: */ +#define CONFIG_INVALID_KEY 1 +#define CONFIG_NO_SECTION_OR_NAME 2 +/* git_config_set(), git_config_set_multivar() return the above or these: */ +#define CONFIG_NO_LOCK -1 +#define CONFIG_INVALID_FILE 3 +#define CONFIG_NO_WRITE 4 +#define CONFIG_NOTHING_SET 5 +#define CONFIG_INVALID_PATTERN 6 + typedef int (*config_fn_t)(const char *, const char *, void *); extern int git_default_config(const char *, const char *, void *); extern int git_config_from_file(config_fn_t fn, const char *, void *); extern void git_config_push_parameter(const char *text); -extern int git_config_parse_parameter(const char *text); -extern int git_config_parse_environment(void); extern int git_config_from_parameters(config_fn_t fn, void *data); extern int git_config(config_fn_t fn, void *); extern int git_config_early(config_fn_t fn, void *, const char *repo_config); @@ -1018,9 +1123,11 @@ extern int git_config_bool(const char *, const char *); extern int git_config_maybe_bool(const char *, const char *); extern int git_config_string(const char **, const char *, const char *); extern int git_config_pathname(const char **, const char *, const char *); +extern int git_config_set_in_file(const char *, const char *, const char *); extern int git_config_set(const char *, const char *); extern int git_config_parse_key(const char *, char **, int *); extern int git_config_set_multivar(const char *, const char *, const char *, int); +extern int git_config_set_multivar_in_file(const char *, const char *, const char *, const char *, int); extern int git_config_rename_section(const char *, const char *); extern const char *git_etc_gitconfig(void); extern int check_repository_format_version(const char *var, const char *value, void *cb); @@ -1030,6 +1137,8 @@ extern int config_error_nonbool(const char *); extern const char *get_log_output_encoding(void); extern const char *get_commit_output_encoding(void); +extern int git_config_parse_parameter(const char *, config_fn_t fn, void *data); + extern const char *config_exclusive_filename; #define MAX_GITNAME (1000) @@ -1096,13 +1205,6 @@ extern void trace_strbuf(const char *key, const struct strbuf *buf); void packet_trace_identity(const char *prog); -/* convert.c */ -/* returns 1 if *dst was used */ -extern int convert_to_git(const char *path, const char *src, size_t len, - struct strbuf *dst, enum safe_crlf checksafe); -extern int convert_to_working_tree(const char *path, const char *src, size_t len, struct strbuf *dst); -extern int renormalize_buffer(const char *path, const char *src, size_t len, struct strbuf *dst); - /* add */ /* * return 0 if success, 1 - if addition of a file failed and @@ -1142,7 +1244,7 @@ extern int ws_blank_line(const char *line, int len, unsigned ws_rule); #define ws_tab_width(rule) ((rule) & WS_TAB_WIDTH_MASK) /* ls-files */ -int report_path_error(const char *ps_matched, const char **pathspec, int prefix_offset); +int report_path_error(const char *ps_matched, const char **pathspec, const char *prefix); void overlay_tree_on_cache(const char *tree_name, const char *prefix); char *alias_lookup(const char *alias); |